The flat bill snapback style caps are becoming popular with many sports fans, and come in a variety of styles.

Some merchandise has already sold well, both online and in the store locations.

According to Katz, items such as the youth Nike Henley jersey, the red Pep Rally zip hoodie, the heather gray Diner hoodie, the official logo T-shirt and the New Era batting practice Diamond Era cap have all sold well recently.

Hours for the Swamp Shop at Fifth Third Field are 11 a.m. to 5 p.m. Monday-Friday and 10 a.m. to 2 p.m. Saturday. The Swamp Shop at Huntington Center will be open until hockey season is finished. Hours are 11 a.m. to 4 p.m. Monday-Friday and 10 a.m. to 2 p.m. Saturday.

Other Swamp Shop locations —Swamp Shop Express and the Tackle Box at the Huntington Center and the Hen Hut at Fifth Third Field — are open only during games.